Carlos Tevez expresses his happiness with rejoining Boca Juniors after his 11-year absence.

Forty thousand people turned up to La Bombonera, packing the stands, singing songs and waving flags. But they weren't there for a match or even a trophy celebration -- they were there on Monday evening for a party to mark what felt, in many ways, like the best result Boca Juniors have had in 2015: the return of Carlos Tevez.